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Add DISABLE_HINTING cache flag

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This commit is contained in:
Jeremy Soller 2025-07-02 10:58:08 -06:00
parent b7eb658166
commit 4de1b13494
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GPG key ID: 670FDFB5428E05CA
3 changed files with 16 additions and 4 deletions
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14
examples/rich-text/src/main.rs
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@ -94,6 +94,7 @@ fn set_buffer_text(buffer: &mut BorrowedWithFontSystem<'_, Buffer>) {
.weight(Weight::BOLD) .weight(Weight::BOLD)
.style(Style::Italic), .style(Style::Italic),
), ),
("🌈", attrs.clone()),
("R", attrs.clone().color(Color::rgb(0xFF, 0x00, 0x00))), ("R", attrs.clone().color(Color::rgb(0xFF, 0x00, 0x00))),
("A", attrs.clone().color(Color::rgb(0xFF, 0x7F, 0x00))), ("A", attrs.clone().color(Color::rgb(0xFF, 0x7F, 0x00))),
("I", attrs.clone().color(Color::rgb(0xFF, 0xFF, 0x00))), ("I", attrs.clone().color(Color::rgb(0xFF, 0xFF, 0x00))),
@ -114,11 +115,20 @@ fn set_buffer_text(buffer: &mut BorrowedWithFontSystem<'_, Buffer>) {
("C", attrs.clone().color(Color::rgb(0x00, 0xFF, 0x00))), ("C", attrs.clone().color(Color::rgb(0x00, 0xFF, 0x00))),
("O", attrs.clone().color(Color::rgb(0xFF, 0xFF, 0x00))), ("O", attrs.clone().color(Color::rgb(0xFF, 0xFF, 0x00))),
("R", attrs.clone().color(Color::rgb(0xFF, 0x7F, 0x00))), ("R", attrs.clone().color(Color::rgb(0xFF, 0x7F, 0x00))),
("N\n", attrs.clone().color(Color::rgb(0xFF, 0x00, 0x00))), ("N", attrs.clone().color(Color::rgb(0xFF, 0x00, 0x00))),
("🦄\n", attrs.clone()),
( (
"生活,삶,जिंदगी 😀 FPS\n", "生活,삶,जिंदगी 😀\n",
attrs.clone().color(Color::rgb(0xFF, 0x00, 0x00)), attrs.clone().color(Color::rgb(0xFF, 0x00, 0x00)),
), ),
(
"Hinting enabled, ",
attrs.clone()
),
(
"Hinting disabled\n",
attrs.clone().cache_key_flags(CacheKeyFlags::DISABLE_HINTING),
),
]; ];
buffer.set_rich_text( buffer.set_rich_text(

2
src/glyph_cache.rs
View file

@ -7,6 +7,8 @@ bitflags::bitflags! {
pub struct CacheKeyFlags: u32 { pub struct CacheKeyFlags: u32 {
/// Skew by 14 degrees to synthesize italic /// Skew by 14 degrees to synthesize italic
const FAKE_ITALIC = 1; const FAKE_ITALIC = 1;
// Disable hinting
const DISABLE_HINTING = 2;
} }
} }

4
src/swash.rs
View file

@ -29,7 +29,7 @@ fn swash_image(
let mut scaler = context let mut scaler = context
.builder(font.as_swash()) .builder(font.as_swash())
.size(f32::from_bits(cache_key.font_size_bits)) .size(f32::from_bits(cache_key.font_size_bits))
.hint(true) .hint(!cache_key.flags.contains(CacheKeyFlags::DISABLE_HINTING))
.build(); .build();
// Compute the fractional offset-- you'll likely want to quantize this // Compute the fractional offset-- you'll likely want to quantize this
@ -80,7 +80,7 @@ fn swash_outline_commands(
let mut scaler = context let mut scaler = context
.builder(font.as_swash()) .builder(font.as_swash())
.size(f32::from_bits(cache_key.font_size_bits)) .size(f32::from_bits(cache_key.font_size_bits))
.hint(true) .hint(!cache_key.flags.contains(CacheKeyFlags::DISABLE_HINTING))
.build(); .build();
// Scale the outline // Scale the outline